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my '01 230 was idling a bit rough lately. No CEL but ran the codes anyways and came up with P2002 Particulate Trap Below Threshold Bank 1.

That seems to be a diesel code? I've found other items for P2002 for the SLK but there is about 10 items that come up for that code (m44 coolant charge pump failure, the rest related to the gas pedal).

I'm assuming it's time to replace the gas pedal sensor/sender but just wanted to double check.